The rubber sealing strip is a sealing strip produced from rubber. Mainly used in automobiles, machinery, doors and windows and other fields, play the role of dustproof, insect-proof, waterproof, fixed, sound insulation, shock absorption, sealing and so on. It can be seen that rubber sealing strips are widely used in our lives, so how to choose rubber sealing strips?

First, let's take a look at the product characteristics of rubber sealing strips:

1. Light bulk density, high tensile strength, no water absorption (replacement of traditional three-linoleum four-felt, asphalt wood fir board and other materials). The product is environmentally friendly, easy to construct, and has good anti-seepage, anti-leakage and water-stop effects.

2. Corrosion resistance, aging resistance, high and low temperature resistance 80℃~-45℃, no flow, no deformation, no embrittlement, long service life.

3. It has an independent open-cell bubble structure, and the appearance of the special joint board is a honeycomb-like hole evenly distributed, which can be tightly bonded and integrated with the cement/sealant without roughening, adapting to changes in natural expansion and contraction, and enhancing the joints Seal expansion and water-stop effect.

Vulcanized EPDM rubber sealing strip:

In terms of sealing elasticity and durability, it is greatly strengthened than that of PVC rubber strips. However, due to the need for microwave vulcanization line shaping, the processing energy consumption is high, usually more than 20 times that of PVC processing. The product cannot be reused, not environmentally friendly, and not advocated by the state. product. In addition, the proportion of materials of this type of products (above 1.4) is comparable to that of PVC (the proportion of low-end vulcanized EPDM strips is larger), and the window rate is similar to that of PVC strips.

The sealing strip is a new material developed on the basis of imported technology from abroad and domestic independent research and development in recent years. Its outstanding advantages are:

1. The performance and service life are comparable to those of vulcanized EPDM rubber seals.

2. The processing energy consumption is lower than that of the vulcanized EPDM strip (equivalent to PVC).

3. It does not contain heavy metals such as halogen and lead, plus it can be recycled after several years, which meets the requirements of green building materials.

The proportion is small (only 0.9-0.95) and the window rate is high. It seems that the purchase unit price is high, and the actual use cost is low.

The price of modified PVC tape is relatively low. Due to the different quality, the price is generally between 6,000 yuan and 15,000 yuan / ton. Due to the use of waste materials, substitute plasticizers and high filling amount for low-end products of sealing strips, the rubber strips have poor elasticity, are easy to harden, have a pungent smell, are easy to migrate, make the frame material yellow, and have a short service life. A few door and window companies that are in low-level price competition are still using them. Medium and high-end PVC strips can meet the standard indicators and have a relatively long service life.

Because PVC products contain halogens and stabilizers contain heavy metals, it is not conducive to environmental protection. Therefore, foreign developed countries and domestic Beijing and coastal cities have eliminated or restricted the use of PVC tapes.

Rubber strip products : http://www.xj-jinda.com/product/epdmxilie/